Target wake time operation for multi-link multi-radio operation

Abstract

Methods and apparatuses for supporting target wake time operation for enhanced multi-link multi-radio operation. A method for wireless communication performed by a non-access point (AP) multi-link device (MLD) that comprises stations (STAs), the method comprising: forming a first enhanced multi-link multi-radio (EMLMR) link for an EMLMR mode of operation with a first AP of an AP MLD; forming a second EMLMR link for the EMLMR mode of operation with a second AP of the AP MLD; establishing a first restricted target wake time (r-TWT) schedule that has an r-TWT service period (SP) is established on the first EMLMR link; determining that the non-AP MLD is operating in the EMLMR mode of operation with the AP MLD; and determining, based on the r-TWT SP, scheduling for traffic on the first EMLMR link and the second EMLMR link.

What is claimed is: 
     
         1 . A non-access point (AP) multi-link device (MLD) associated with a wireless network, the non-AP MLD comprising:
 a first non-AP station (STA) affiliated with the non-AP MLD, the first non-AP STA setting up a first link with a first AP affiliated with an AP MLD, wherein the first non-AP STA is a member of a restricted target wake time (R-TWT) schedule on the first link;   a second non-AP STA affiliated with the non-AP MLD, the second non-AP STA setting up a second link with a second AP affiliated with the AP MLD, where frame exchange takes place on the second link; and   a processor coupled to the first non-AP STA and the second non-AP STA, the processor configured to:
 operate with the AP MLD in an enhanced multi-link multi-radio operation (EMLMR) mode on the first link and the second link, and 
 coordinate with the AP MLD such that the frame exchange on the second link is terminated before a R-TWT service period (SP) starts on the first link. 
   
     
     
         2 . The non-AP MLD of  claim 1 , wherein the second non-AP STA is not a member of any R-TWT schedule that overlaps in time with the R-TWT SP on the first link. 
     
     
         3 . The non-AP MLD of  claim 1 , wherein the frame exchange to take place on the second link overlaps in time with the R-TWT SP on the first link. 
     
     
         4 . The non-AP MLD of  claim 1 , wherein the processor is configured to coordinate with the AP MLD such that the frame exchange on the second link does not overlap in time with the R-TWT SP on the first link. 
     
     
         5 . The non-AP MLD of  claim 1 , wherein the processor is configured to coordinate with the AP MLD such that the AP MLD ends transmission of downlink frame on the second link before the R-TWT SP starts on the first link. 
     
     
         6 . The non-AP MLD of  claim 1 , wherein the first link and the second link form a pair of EMLMR links between the non-AP MLD and the AP MLD. 
     
     
         7 . An access point (AP) multi-link device (MLD) associated with a wireless network, the AP MLD comprising:
 a first AP affiliated with the AP MLD, the first AP setting up a first link with a first non-AP station (STA) affiliated with a non-AP MLD, wherein a restricted target wake time (R-TWT) schedule is set up on the first link;   a second AP affiliated with the AP MLD, the second AP setting up a second link with a second non-AP STA affiliated with the non-AP MLD, wherein frame exchange takes place on the second link; and   a processor coupled to the first AP and the second AP, the processor configured to:
 operate with the non-AP MLD in an enhanced multi-link multi-radio operation (EMLMR) mode on the first link and the second link, and 
 coordinate between the non-AP MLD such that the frame exchange on the second link is terminated before a R-TWT service period (SP) starts on the first link. 
   
     
     
         8 . The AP MLD of  claim 7 , wherein the first STA is a member of the R-TWT schedule on the first link, and the second STA is not a member of any R-TWT schedule that overlaps in time with the R-TWT SP on the first link. 
     
     
         9 . The APMLD of  claim 7 , wherein the frame exchange to take place on the second link overlaps in time with the R-TWT SP on the first link. 
     
     
         10 . The AP MLD of  claim 7 , wherein the processor is configured to coordinate with the non-AP MLD such that the frame exchange on the second link does not overlap in time with the R-TWT SP on the first link. 
     
     
         11 . The AP MLD of  claim 7 , wherein the processor is configured to coordinate with the non-AP MLD such that the AP MLD ends transmission of downlink frame on the second link before the R-TWT SP starts on the first link. 
     
     
         12 . The AP MLD of  claim 7 , wherein the first link and the second link form a pair of EMLMR links between the non-AP MLD and the AP MLD. 
     
     
         13 . A method for a non-access point (AP) multi-link device (MLD) associated with a wireless network, the method comprising:
 operating with an AP MLD in an enhanced multi-link multi-radio operation (EMLMR) mode on the first link and the second link, the first link being set up between a first non-AP station (STA) affiliated with the non-AP MLD and a first AP affiliated with the AP MLD, the second link being set up between a second non-AP STA affiliated with the non-AP MLD and a second AP affiliated with the AP MLD; and   coordinating with the AP MLD such that frame exchange on the second link is terminated before a restricted target wake time (R-TWT) service period (SP) starts on the first link.   
     
     
         14 . The method of  claim 13 , wherein the first non-AP STA is a member of the R-TWT schedule on the first link, and the second non-AP STA is not a member of any R-TWT schedule that overlaps in time with the R-TWT SP on the first link. 
     
     
         15 . The method of  claim 13 , wherein the frame exchange to take place on the second link overlaps in time with the R-TWT SP on the first link. 
     
     
         16 . The method of  claim 13 , wherein coordinating with the AP MLD comprises coordinating with the AP MLD such that the frame exchange on the second link does not overlap in time with the R-TWT SP on the first link. 
     
     
         17 . The method of  claim 13 , wherein coordinating with the AP MLD comprises coordinating with the AP MLD such that the AP MLD ends transmission of downlink frame on the second link before the R-TWT SP starts on the first link. 
     
     
         18 . The method of  claim 13 , wherein the first link and the second link form a pair of EMLMR links between the non-AP MLD and the AP MLD.